When accused triggerman Ronell Wilson goes on trial in the murders of two undercover cops on Staten Island, he could face powerful DNA evidence that links him and his alleged cohorts to the killings.

Prosecutors have sent a wide array of items for testing – ranging from clothing and hair samples to coffee cups and a cigarette butt, law enforcement sources said.

A letter from Assistant U.S. Attorney Colleen Kavanagh gave defense lawyers notice yesterday that a DNA expert would testify – and indicated reports on the evidence would soon be available.

This week, prosecutors also turned over allegedly incriminating post-arrest statements spanning three years, along with a list of physical evidence.

A cigarette butt, anti-cop rap lyrics, two cellphones, and keys are among the property seized from Wilson.

The feds also have at least three guns and more than 60 bags of crack connected with the case.

Detectives James Nemorin, 36, and Rodney Andrews, 32, were gunned down on March 10, 2003, as they attempted to make an undercover gun purchase from Wilson, prosecutors have alleged.

Wilson had been charged in state court, but the case was turned over the feds after New York’s death penalty law was overturned. He’s now faces federal racketeering murder charges, for which he could be executed.

Defense lawyer Ephraim Savitt said the evidence received by the defense team is “largely what the state provided and doesn’t change the equation as far as the defense is concerned.”